Till January of this year, the Wahoo Key for iPhone ($80) dongle pwned fitness on the iPhone. Why? Because the tiny, ubiquitous dongle gives the iPhone access to dozens of ANT+ sensors, and more fitness apps than any other system — turning your iPhone into a fitness-tracking powerhouse.

Then in January, Wahoo one-upped itself and introduced the Wahoo Blue Bluetooth heart-rate strap, which completely bypasses ANT+ and instead communicates via low-energy Bluetooth v4.0. Does this mean the Key is obsolete? Not by a long shot.

Just like their older system, Zeo’s new Sleep Manager Mobile tracks your sleep patterns using a transmitter worn on the forehead while sleeping that relays your sleep state to a receiver. Only Zeo’s new gadget transmits the data directly to the iPhone.

I was just speaking with another reviewer here about how surprisingly common it is for manufacturers to copy each other’s designs. To ‘port an entire line of products, though, is a little more unusual: iHealth has just announced an app-enhanced digital scale, blood pressure monitor and baby monitor that mirrors Withings‘ entire lineup, gadget for gadget.

I’ve worked at a few desks that used Cisco VoIP phones (one in the Wired.com offices among them); but something like the new Invoxia NVX 610 iPhone-controlled conference phone may eventually turn conventional handsets — even VoIP ones — into relics.